Motor 3 and Motor 4 been added
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a652f95890
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9bf66a4bf7
1 changed files with 19 additions and 3 deletions
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@ -26,6 +26,8 @@ class Car:
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# preset GPIO ports for 2 motors
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# preset GPIO ports for 2 motors
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self.Motor1 = {'EN': 25, 'input1': 24, 'input2': 23}
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self.Motor1 = {'EN': 25, 'input1': 24, 'input2': 23}
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self.Motor2 = {'EN': 17, 'input1': 27, 'input2': 22}
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self.Motor2 = {'EN': 17, 'input1': 27, 'input2': 22}
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self.Motor3 = {'EN': 6, 'input1': 19, 'input2': 13}
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self.Motor4 = {'EN': 16, 'input1': 20, 'input2': 21}
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# preset the port for buttons and alarm
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# preset the port for buttons and alarm
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GPIO.setup(26,GPIO.OUT) # alarm output
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GPIO.setup(26,GPIO.OUT) # alarm output
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@ -40,12 +42,18 @@ class Car:
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for x in self.Motor1:
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for x in self.Motor1:
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GPIO.setup(self.Motor1[x], GPIO.OUT)
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GPIO.setup(self.Motor1[x], GPIO.OUT)
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GPIO.setup(self.Motor2[x], GPIO.OUT)
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GPIO.setup(self.Motor2[x], GPIO.OUT)
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GPIO.setup(self.Motor3[x], GPIO.OUT)
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GPIO.setup(self.Motor4[x], GPIO.OUT)
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# utilize PWM function, enable motors and frequency is 100Hz
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# utilize PWM function, enable motors and frequency is 100Hz
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self.EN1 = GPIO.PWM(self.Motor1['EN'], 100)
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self.EN1 = GPIO.PWM(self.Motor1['EN'], 100)
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self.EN2 = GPIO.PWM(self.Motor2['EN'], 100)
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self.EN2 = GPIO.PWM(self.Motor2['EN'], 100)
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self.EN3 = GPIO.PWM(self.Motor3['EN'], 100)
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self.EN4 = GPIO.PWM(self.Motor4['EN'], 100)
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self.EN1.start(0)
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self.EN1.start(0)
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self.EN2.start(0)
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self.EN2.start(0)
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self.EN3.start(0)
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self.EN4.start(0)
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# stop signals for motors and alarm
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# stop signals for motors and alarm
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self.motorStop=True
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self.motorStop=True
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@ -62,10 +70,16 @@ class Car:
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self.motorStop=False
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self.motorStop=False
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self.EN1.ChangeDutyCycle(50)
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self.EN1.ChangeDutyCycle(50)
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self.EN2.ChangeDutyCycle(50)
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self.EN2.ChangeDutyCycle(50)
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self.EN3.ChangeDutyCycle(50)
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self.EN4.ChangeDutyCycle(50)
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GPIO.output(self.Motor1['input1'], GPIO.LOW)
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GPIO.output(self.Motor1['input1'], GPIO.LOW)
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GPIO.output(self.Motor1['input2'], GPIO.HIGH)
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GPIO.output(self.Motor1['input2'], GPIO.HIGH)
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GPIO.output(self.Motor2['input1'], GPIO.HIGH)
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GPIO.output(self.Motor2['input1'], GPIO.HIGH)
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GPIO.output(self.Motor2['input2'], GPIO.LOW)
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GPIO.output(self.Motor2['input2'], GPIO.LOW)
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GPIO.output(self.Motor3['input1'], GPIO.LOW)
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GPIO.output(self.Motor3['input2'], GPIO.HIGH)
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GPIO.output(self.Motor4['input1'], GPIO.HIGH)
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GPIO.output(self.Motor4['input2'], GPIO.LOW)
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print("motor is turned on")
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print("motor is turned on")
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def stop_motor(self):
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def stop_motor(self):
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@ -73,6 +87,8 @@ class Car:
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self.motorStop=True
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self.motorStop=True
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self.EN1.ChangeDutyCycle(0)
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self.EN1.ChangeDutyCycle(0)
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self.EN2.ChangeDutyCycle(0)
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self.EN2.ChangeDutyCycle(0)
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self.EN3.ChangeDutyCycle(0)
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self.EN4.ChangeDutyCycle(0)
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print("motor stops")
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print("motor stops")
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def start_alarm(self):
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def start_alarm(self):
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@ -157,7 +173,7 @@ if __name__=="__main__":
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# get distance data from distance sensor
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# get distance data from distance sensor
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dist = car.distance()
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dist = car.distance()
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#print ("Measured Distance = %.1f cm" % dist)
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print ("Measured Distance = %.1f cm" % dist)
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# Turn on motor if get sensor signal
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# Turn on motor if get sensor signal
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if (motorSignal=="on" and car.motorStop):
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if (motorSignal=="on" and car.motorStop):
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